Actually, nobody. Here is the commit where Reader/Writer was introduced: https://github.com/ziglang/zig/commit/5e212db29cf9e2c06aba363736ffb965e631aa2d https:/

Actually, nobody. Here is the commit where Reader/Writer was introduced: https://github.com/ziglang/zig/commit/5e212db29cf9e2c06aba363736ffb965e631aa2d https://github.com/ziglang/zig/commit/5e212db29cf9e2c06aba36... This is a few months after `git init`. You can see I was really just working on the parser, with a toy example to get things started. Over time, I merged contributions that made minor changes and shuffled things around, and these APIs evolved to kind of work okay. But nobody really considered "the Zig IO stack" as a whole and put in design effort. That is happening for the first time right now. This is how programming languages are constructed. Things evolve slowly over time, and periodically you have to reevaluate things and do major reworkings.